CN116902089A - Vehicle and rear floor side beam assembly thereof - Google Patents

Abstract

The application relates to a vehicle and a rear floor boundary beam assembly thereof, wherein the rear floor boundary beam assembly comprises: the upper sealing plate comprises an upper sealing plate body and a supporting section, the supporting section is connected with the end part of the upper sealing plate body in a bending mode and is connected with the rear floor edge beam, and the supporting section, the upper sealing plate body and the rear floor edge beam jointly define a cavity. Therefore, the supporting section can play a role in strengthening structural strength, a reinforcing piece is not required to be additionally arranged in the cavity, assembly steps can be simplified, assembly precision is improved, the upper sealing plate can be directly connected with the rear floor side beam in the height direction of the vehicle, and the reliability of the rear floor side beam and the rear floor side beam in the height direction can be improved so as to improve bending and torsional rigidity. Simultaneously, through making supporting section, last shrouding body and rear floor boundary beam prescribe a limit jointly the cavity, the cavity can further improve whole bending rigidity. In addition, by omitting the reinforcement member connected with the rear floor side beam, the volume of the cavity can be increased, so that the bending rigidity can be further improved.

Description

Vehicle and rear floor side beam assembly thereof

Technical Field

The application relates to the technical field of vehicles, in particular to a vehicle and a rear floor boundary beam assembly thereof.

Background

In the related art, when a vehicle is in road conditions such as road bump, the rear floor edge beam assemblies on two sides of the vehicle are not on the same plane, the maximum limit which the rear floor edge beam assemblies can bear is exceeded along with the increase of times, and the structure of the vehicle is changed, so that the conditions of loose sealing, abnormal sound and even no closing of the vehicle door are generated. This has very big influence to the security, the operability and the comfort level of vehicle itself, brings very big potential safety hazard.

Disclosure of Invention

One of the purposes of the present application is to provide a rear floor side beam assembly of a vehicle, so as to solve the problem that the bending stiffness of the rear floor side beam assembly in the prior art is low, and the safety performance of the vehicle is affected; the second object is to provide a vehicle.

In order to achieve the above purpose, the technical scheme adopted by the application is as follows:

the utility model provides a back floor boundary beam assembly, includes back floor boundary beam and goes up the shrouding, go up the shrouding and include shrouding body and support the section, support the section with the tip of going up the shrouding body is buckled and is connected and with back floor boundary beam links to each other, support the section go up the shrouding body with back floor boundary beam defines the cavity jointly.

According to the technical means, the rear floor side beam assembly is provided with the supporting section, the supporting section is connected with the rear floor side beam, the supporting section can play a role in supporting and reinforcing structural strength, and further the reinforcing piece can be replaced, so that the cavity is not required to be additionally provided with the reinforcing piece, the assembly step can be simplified, the assembly difficulty is reduced, the assembly precision is improved, the upper sealing plate can be directly connected with the rear floor side beam in the height direction of the vehicle, the reliability of the cooperation of the upper sealing plate and the rear floor side beam can be improved, and the bending rigidity is improved. Simultaneously, through making the supporting section the upper shrouding body with the rear floor boundary beam prescribes a limit jointly the cavity, the cavity can further improve whole bending rigidity. In addition, by omitting the reinforcement member connected with the rear floor side beam, the volume of the cavity can be increased, so that the bending rigidity can be further improved.

Further, the rear floor side beam comprises a first beam body and at least one second beam body, the first beam body is located on one side of the upper sealing plate in the height direction of the vehicle, the second beam body is connected to one side of the first beam body in the width direction of the vehicle, a first flanging is arranged on one side of at least one of the support section and the upper sealing plate body in the width direction of the vehicle, and the first flanging is connected with the second beam body in a welded mode.

According to the technical means, the rear floor side beam structure is good in stability and high in strength, loads of the vehicle in multiple directions can be further dispersed, and bending rigidity is further improved.

Further, a portion of the first flange projects in a direction away from the second beam to be spaced apart from the second beam. According to the technical means, the bonding area of the upper sealing plate and the rear floor edge beam can be reduced, the bonding length of the upper sealing plate and the rear floor edge beam can be ensured to be longer, the mounting reliability of the upper sealing plate and the rear floor edge beam is ensured, the electrophoresis permeability and the electrophoresis effect can be improved, and the safety performance of a vehicle is improved.

Further, the upper seal plate may have a plurality of reinforcing ribs on a side surface thereof facing the height direction of the vehicle, the plurality of reinforcing ribs extending in the width direction of the vehicle, or at least two of the plurality of reinforcing ribs may be connected to each other and both ends of at least one reinforcing rib may be connected to edges of the upper seal plate extending in the length direction of the vehicle, respectively.

According to the technical means, compared with the length direction of the vehicle, the rear floor side beam assembly can extend obliquely so as to resist the load generated on the rear floor side beam assembly when the vehicle encounters the road bump working condition, and the integral bending and twisting strength is improved.

Further, the rear floor side beam assembly further comprises a rear auxiliary frame nut sleeve, the rear auxiliary frame nut sleeve is connected with a rear auxiliary frame of the vehicle, the upper sealing plate is provided with a first through hole and an annular flanging surrounding the first through hole, and the rear auxiliary frame nut sleeve penetrates through the first through hole and is connected with the annular flanging in a welding mode.

According to the technical means, the welding area and the stress area can be increased, the local shearing force is reduced, the mounting reliability of the welding area and the stress area is improved, the force can be effectively transmitted to the two sides of the rear floor side beam, the overall bending and torsional rigidity is increased, and the stress intensity and the welding reliability of the nut sleeve of the rear auxiliary frame can be improved.

Further, the rear floor side rail has a second through hole disposed opposite the first through hole, and the rear subframe nut sleeve has an annular convex edge protruding outward in the radial direction; the rear floor boundary beam assembly further comprises: the first rear auxiliary frame connecting plate is provided with a third through hole which is opposite to the first through hole and the second through hole, the auxiliary frame nut sleeve is arranged in the first through hole, the second through hole and the third through hole in a penetrating mode, the annular convex edge is provided with a step portion, and the rear floor side beam, the first rear auxiliary frame connecting plate and the step portion are abutted.

According to the technical means, the bending and torsional rigidity can be improved, and the structure is simple and the cost is low.

Further, the upper sealing plate is provided with a fourth through hole which is arranged at intervals with the first through hole, the rear floor side beam assembly further comprises a rear longitudinal arm nut sleeve, the rear longitudinal arm nut sleeve penetrates through the fourth through hole and is welded with the hole wall of the fourth through hole, and in the height direction of the vehicle, the distance between one end, adjacent to the upper sealing plate, of the rear longitudinal arm nut sleeve and the hole wall of the fourth through hole is 2-4 mm.

According to the technical means, the volume of the cavity can be further increased, the stability of the rear trailing arm nut sleeve after being stressed is improved, and the bending rigidity is improved.

Further, the rear floor side beam includes: the side beam front section is provided with a first side beam section and a second side beam section which are connected in a bending way; the boundary beam middle section, the boundary beam middle section has third boundary beam section and fourth boundary beam section of buckling connection, first boundary beam section with third boundary beam section welded connection, second boundary beam section with fourth boundary beam section welded connection.

According to the technical means, the structural strength of the rear floor side beam can be improved, the load of the vehicle in multiple directions can be dispersed and borne, and meanwhile, the bending and torsional rigidity can be improved. Of course, the rear floor side beam can further comprise a side beam rear section, and the side beam front section, the side beam middle section and the side beam middle section are sequentially arranged along the front-back direction and are in welded connection, so that the structural reliability of the rear floor side beam is guaranteed.

Further, the rear floor edge beam assembly further includes: the rear trailing arm connecting plate is positioned on one side of the upper sealing plate along the height direction of the vehicle; two side walls of the rear trailing arm connecting plate, which are opposite to each other along the width direction of the vehicle, are respectively provided with a second flanging, and the second flanging is welded with the rear floor side beam; and/or, the rear trailing arm connecting plate is provided with a first concave part, the rear floor side beam is provided with a second concave part, and the first concave part is attached to the second concave part and is connected with the second concave part in a welding way.

According to the technical means, the welding area is further improved, and the mounting stability of the welding area are improved. Simultaneously, the overall bending rigidity can be further improved.

A vehicle comprises the rear floor side beam assembly. The vehicle has high bending and torsional rigidity and good safety performance.

The application has the beneficial effects that:

(1) According to the application, the support section is arranged and connected with the rear floor side beam, and the support section can play a role in reinforcing structural strength and further can replace a reinforcing piece, so that the cavity is not required to be additionally provided with the reinforcing piece, the assembly steps can be simplified, the assembly difficulty is reduced, the assembly precision is improved, the upper sealing plate can be directly connected with the rear floor side beam in the height direction of the vehicle, the reliability of the cooperation of the upper sealing plate and the rear floor side beam can be improved, and the bending rigidity is improved. Simultaneously, through making supporting section, last shrouding body and rear floor boundary beam prescribe a limit jointly the cavity, the cavity can further improve whole bending rigidity.

(2) According to the application, the first side beam section of the side beam front section is welded with the third side beam section of the side beam middle section, and the second side beam section of the side beam front section is welded with the fourth side beam section of the side beam middle section, so that the structural strength of the rear floor side beam can be improved, the load of a vehicle in multiple directions can be dispersed and borne, and meanwhile, the bending rigidity can be improved.

(3) According to the application, the first flanging of the upper sealing plate is welded with the second beam body, so that the rear floor side beam structure is good in stability and high in strength, loads of the vehicle in multiple directions can be further dispersed, and the bending rigidity is further improved. Meanwhile, a part of the first flanging is arranged at intervals with the second beam body, so that the attaching area of the upper sealing plate and the rear floor side beam can be reduced, the attaching length of the upper sealing plate and the rear floor side beam can be ensured to be longer, the mounting reliability of the upper sealing plate and the rear floor side beam is ensured, the electrophoresis permeability and the electrophoresis effect can be improved, and the safety performance of a vehicle is improved.

(4) According to the application, the step part of the nut sleeve of the auxiliary frame is arranged, so that the contact bearing area between the nut sleeve and the side beam can be increased, and the welding length is further increased, so that the cross beam is firm. The Z-direction step part of the vehicle is welded with the rear floor side beam and the first rear auxiliary frame connecting plate, the Z-direction bearing thickness is increased, and the dynamic stiffness and the whole vehicle performance of the point are further improved.

Drawings

FIG. 1 is an exploded view of a rear floor edge beam assembly according to an embodiment of the present application;

FIG. 2 is a side view of a rear floor edge beam assembly of an embodiment of the application;

FIG. 3 is a cross-sectional view at A-A according to FIG. 2;

FIG. 4 is a cross-sectional view at B-B according to FIG. 2;

FIG. 5 is a cross-sectional view at C-C according to FIG. 2;

FIG. 6 is a perspective view of a rear trailing arm attachment plate according to an embodiment of the application;

FIG. 7 is a perspective view of an upper closure plate according to an embodiment of the present application;

FIG. 8 is a perspective view of a first rear subframe attachment plate of an embodiment of the application;

fig. 9 is a perspective view of a second rear subframe connection plate of an embodiment of the application.

100 parts of a rear floor side beam assembly;

x, the length direction of the vehicle; y, width direction of the vehicle; z, the height direction of the vehicle;

1. a side beam front section; 110. a first side sill section; 120. a second side rail section; 2. a side beam middle section; 21. a first beam body; 22. a second beam body; 23. a second through hole; 24. a fourth beam section; a third side rail section 25;

3. a rear trailing arm connecting plate; 31. a second flanging; 32. a first concave portion;

4. a rear trailing arm nut sleeve; 5. an upper sealing plate; 51. an upper seal plate body; 52. a support section; 53. a first flanging; 531. a boss; 54. reinforcing ribs; 55. a first through hole; 56. annular flanging; 57. a fourth through hole;

6. a rear subframe nut sleeve; 61. an annular flange; 611. a step portion;

7. the nut sleeve reinforces the bracket; 8. the rear section of the side beam; 9. a second rear subframe connecting plate; 91. fourth flanging; 92. the first convex rib; 10. a spring support plate assembly;

11. a first rear subframe connecting plate; 111. a third through hole; 112. a third flanging; 113. the second convex rib; E. a cavity.

Detailed Description

Further advantages and effects of the present application will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

The present embodiment proposes a rear floor side rail assembly 100 of a vehicle, as shown in fig. 1 to 9, the rear floor side rail assembly 100 of a vehicle includes: rear floor side beams and upper closing plates 5.

Specifically, as shown in fig. 1 and 7, the upper sealing plate 5 includes an upper sealing plate body 51 and a supporting section 52, the supporting section 52 is connected with an end of the upper sealing plate body 51 in a bending manner and is connected with a rear floor side beam, and the supporting section 52, the upper sealing plate body 51 and the rear floor side beam define a cavity E together. The upper sealing plate 5 and the rear floor side beam may be made of steel, the upper sealing plate 5 may be made of integrally formed steel, and the support section 52 may be welded to the rear floor side beam.

It can be understood that when the vehicle is in road conditions such as road jolts, the rear floor side beams on two sides of the vehicle are not on the same plane, if the bending rigidity of the rear floor side beam assembly is low, the bending resistance is poor, deformation can be caused along with the increase of the number of road conditions, and the whole vehicle performance is affected. In the prior art, rear floor boundary beam and last shrouding are equipped with a plurality of reinforcement that are used for strengthening structural strength at the direction of height Z interval setting of vehicle and between rear floor boundary beam and last shrouding, however such setting mode part is more, leads to the assembly step complicated, and the part is too much can lead to the precision of installation relatively poor. In addition, the bending rigidity of the rear floor side beam assembly cannot be ensured.

According to the rear floor side beam assembly 100 disclosed by the embodiment of the application, the supporting section 52 is arranged, the supporting section 52 is connected with the rear floor side beam, the supporting section 52 can play a role in supporting and reinforcing structural strength, and further can replace a reinforcing piece, so that the cavity E is not required to be additionally provided with the reinforcing piece, the assembly step can be simplified, the assembly difficulty is reduced, the assembly precision is improved, the upper sealing plate 5 can be directly connected with the rear floor side beam in the height direction Z of a vehicle, the matching reliability of the upper sealing plate and the rear floor side beam can be improved, and the bending rigidity is improved. Meanwhile, the supporting section 52, the upper sealing plate body 51 and the rear floor side beam jointly define a cavity E, and the cavity E can further improve the overall bending rigidity. In addition, by omitting the reinforcement member connected with the rear floor side beam and located in the cavity E, the volume of the cavity E can be increased, so that the bending rigidity can be further improved.

In some embodiments, as shown in fig. 1 and 2, the rear floor side rail includes a side rail front section 1 and a side rail middle section 2, the side rail front section 1 has a first side rail section 110 and a second side rail section 120 connected in a bent manner, the side rail middle section 2 has a third side rail section 25 and a fourth side rail section 24 connected in a bent manner, the first side rail section 110 is welded to the third side rail section 25, and the second side rail section 120 is welded to the fourth side rail section 24. For example, the upper seal plate 5 may define the cavity E with the rocker middle section 2. In the prior art, the front side beam section and the middle side beam section are only in one-way welding connection, so that the structure strength is poor, and the bending rigidity is low. For example, the first and third side beam sections 110, 25 may extend in a vertical direction, the second and fourth side beam sections 120, 24 may extend in a horizontal direction, the first and third side beam sections 110, 25 may be welded, and the second and fourth side beam sections 120, 24 may be welded. Therefore, the structural strength of the rear floor side beam can be improved, the load of the vehicle in multiple directions can be dispersed and borne, and meanwhile, the bending and torsional rigidity can be improved. Of course, the rear floor side beam can further comprise a side beam rear section 8, and the side beam front section 1, the side beam middle section 2 and the side beam rear section 8 are sequentially arranged along the front-back direction and are in welded connection, so that the structural reliability of the rear floor side beam is guaranteed.

In some embodiments, as shown in fig. 1 and 7, the rear floor side rail includes a first rail body 21 and at least one second rail body 22, the first rail body 21 is located at one side of the upper seal plate 5 in the vehicle height direction Z, the second rail body 22 is connected to one side of the first rail body 21 in the vehicle width direction Y, one side of at least one of the support section 52 and the upper seal plate body 51 in the vehicle width direction Y has a first flange 53, for example, both the support section 52 and the upper seal plate body 51 have a first flange 53, and the first flange 53 is welded to the second rail body 22. For example, the fourth beam section 24 may be formed at a different location from the first beam body 21 in the same structure that is integrally formed therewith. The boundary beam middle section 2 includes first roof beam body 21 and two second roof beam bodies 22, and the both sides along width direction Y of vehicle of first roof beam body 21 are located respectively to two second roof beam bodies 22, and two second roof beam bodies 22, first roof beam body 21 and last shrouding 5 limit cavity E jointly, and the rear floor boundary beam structure steadiness that so set up is good and intensity is high, can further disperse the vehicle load on a plurality of directions, further improves the bending rigidity.

For example, the number of the first flanges 53 may be two, and the two first flanges 53 are respectively located at two sides of the upper sealing plate 5 along the width direction Y of the vehicle and are disposed corresponding to the two second beam bodies 22 so as to facilitate welding, so as to further improve structural reliability and stability of welding of the rear floor side beam, prevent deformation of the rear floor side beam, and improve bending stiffness.

Further, as shown in fig. 7, a portion of the first flange 53 projects in a direction away from the second beam 22 so as to be spaced apart from the second beam 22. A portion of the first flange 53 may be formed to protrude in a direction away from the second beam 22 to form a boss 531. In the prior art, the installation mode of back floor boundary beam and last shrouding is the laminating setting completely, like this, can lead to electrophoresis effect when welding poor, electrophoresis permeability is poor even unable electrophoresis is comprehensive, leads to rust corrosion, influences the security performance of vehicle. By arranging a part of the first flange 53 and the second beam body 22 at intervals, the application can reduce the bonding area of the upper sealing plate 5 and the rear floor side beam, ensure longer bonding length and more positions of the upper sealing plate 5 and the rear floor side beam, ensure the mounting reliability of the upper sealing plate 5 and the rear floor side beam, improve the electrophoresis permeability and electrophoresis effect and improve the safety performance of vehicles.

In addition, because the second beam 22 is designed to adapt to the whole vehicle, the side connected with the first flange 53 is set to be non-planar, and thus, the matching precision and the deformation resistance of the first flange 53 and the second beam 22 can be improved, and the structural strength and the bending rigidity of the rear floor side beam assembly 100 can be improved. For example, the plurality of positions of the first flange 53 protrude toward a direction away from the second beam 22, that is, the plurality of protrusions 531 are provided, so that the plurality of positions of the first flange 53 are spaced apart from the second beam 22, thereby further improving the electrophoresis permeability and electrophoresis effect, and improving the structural strength and the bending stiffness of the rear floor side beam assembly 100.

In some embodiments, as shown in fig. 7, a side surface of the upper sealing plate 5 facing the height direction Z of the vehicle has a plurality of reinforcing ribs 54, and the plurality of reinforcing ribs 54 extend in the width direction Y of the vehicle to secure the capability of resisting a jounce condition and to improve the strength and rigidity of the bending moment. Alternatively, at least two of the plurality of reinforcing beads 54 are connected to each other, and both ends of at least one reinforcing bead 54 are respectively connected to edges of the upper seal plate 5 extending in the longitudinal direction X of the vehicle. For example, both ends of the reinforcing bead 54 may extend to the first flange 53. In the prior art, the reinforcing structure at the upper sealing plate extends only along the length direction of the vehicle, so that the capability of the reinforcing structure for integrally resisting the bumping working condition cannot be ensured when the reinforcing structure encounters the bumping working condition of the road, and the bending strength and the rigidity are low. For example, the plurality of reinforcing ribs 54 are connected to each other, and both ends of the plurality of reinforcing ribs 54 are respectively connected to edges of the upper sealing plate 5 extending along the longitudinal direction X of the vehicle, so that the reinforcing ribs 54 are in the shape of an "N" or an "M" shape, and the specific arrangement manner of the reinforcing ribs can be flexibly set according to actual requirements, which is not limited herein.

In some embodiments, as shown in fig. 4, the rear floor side rail assembly 100 may further include a rear subframe nut collar 6, where the rear subframe nut collar 6 is connected to a rear subframe (not shown) of the vehicle, and the upper sealing plate 5 has a first through hole 55 and an annular flange 56 surrounding the first through hole 55, and the rear subframe nut collar 6 is disposed through the first through hole 55 and welded to the annular flange 56. Through setting up annular turn-ups 56, can realize the welded connection of back sub vehicle frame nut sleeve pipe 6 and last shrouding 5 along the direction of height Z of vehicle, for example, can be for welding connection, like this, can improve welding area and area of force, reduce local shearing force, improve the reliability of both installations to can make the both sides of effective transmission floor boundary beam behind the force, increase whole bending rigidity, can improve the atress intensity and the welding reliability of back sub vehicle frame nut sleeve pipe 6 simultaneously.

In addition, the length of upper seal plate 5 can be prolonged to set up so, and the upper seal plate 5 is prolonged to back sub vehicle frame nut sleeve 6 with upper seal plate 5 back floor boundary beam, can improve cavity E's volume, can weld as an organic wholely with the crossbeam connecting piece, forms a closed cavity with back floor boundary beam and promotes wholeness to reduce the installation reinforcing bracket, reduce welding procedure, reduce cost.

Further, as shown in fig. 4, the rear floor side rail has a second through-hole 23 provided opposite to the first through-hole 55, for example, formed in the side rail middle section 2, and the rear subframe nut collar 6 has an annular convex edge 61 protruding outward in the radial direction; the rear floor side rail assembly 100 further includes a first rear sub-frame connecting plate 11, the first rear sub-frame connecting plate 11 has a third through hole 111 provided opposite to the first through hole 55 and the second through hole 23, the sub-frame rear sub-frame nut bushing 6 is inserted through the first through hole 55, the second through hole 23 and the third through hole 111, the annular flange 61 has a step portion 611, and the rear floor side rail and the first rear sub-frame connecting plate 11 are abutted against the step portion 611. Here, the abutment means that the rear floor side rail and the first rear sub-frame connecting plate 11 may each be welded to the stepped portion 611 in at least one of the width direction Y of the vehicle and the height direction Z of the vehicle. In the prior art, the auxiliary frame nut sleeve is only arranged through the third through hole, so that the auxiliary frame nut sleeve and the third through hole are not stressed in the width direction Y of a vehicle, the connection strength cannot be ensured during welding, the bending rigidity of the rear floor side beam assembly is poor, or a plurality of independently arranged reinforcing pieces are required to be arranged to improve the structural strength so as to achieve the connection strength, the welding process and the weight are increased, and the mounting precision is poor due to excessive parts. The Z-directional step 611 of the vehicle is welded with the rear floor side beam and the first rear subframe connecting plate 11, so that the Z-directional bearing thickness is increased, and the dynamic stiffness and the overall vehicle performance of the point are further improved.

Of course, as shown in fig. 5, the rear floor side rail assembly 100 may further include another rear subframe nut bushing 6 and a second rear subframe connecting plate 9 spaced apart from the rear subframe nut bushing 6 along the length direction X of the vehicle, and the another rear subframe nut bushing 6 may have the same structure as the rear subframe nut bushing 6, that is, the another rear subframe nut bushing 6 may have an annular flange 61 and a step 611 and be welded to the second rear subframe connecting plate 9 and the side rail middle section 2, and the second rear subframe connecting plate 9 and the side rail middle section 2 may be respectively inserted into the another rear subframe nut bushing 6 and be abutted against and welded to the step of the another rear subframe nut bushing 6.

For example, as shown in fig. 5, the rear floor side rail assembly 100 may further include a nut-pipe reinforcing bracket 7, and the other rear subframe nut pipe 6 is inserted through the nut-pipe reinforcing bracket 7 and welded to improve the installation reliability of the other rear subframe nut pipe 6. And then two layers of welding connection are performed with the side beam middle section 2 so as to improve the bending and torsional rigidity. As shown in fig. 1, the rear floor side rail assembly 100 may further include a spring support plate assembly 10, and the spring support plate assembly 10 may be mounted to the side rail middle section 2.

For example, the two rear subframe nut bushings 6 can be configured into a T shape, the mounting surface of the suspension is a T-shaped nut pipe end surface, the improvement of the precision of the mounting surface of the suspension is ensured, the welding surface is longer, the stress surface is larger, and the mounting strength of the suspension is improved. The two rear subframe nut sleeves 6 can be both positioned in the cavity E and welded with the upper sealing plate 5 and the rear floor side beam, so that at least one part of the mounting structure for mounting the rear subframe nut sleeves 6 can be omitted or reduced, the welding process is reduced, the cost is reduced, and the assembly precision is improved.

In some embodiments, as shown in fig. 3, the upper sealing plate 5 has a fourth through hole 57 spaced from the first through hole 55, and the rear floor side rail assembly 100 further includes a rear trailing arm nut sleeve 4, where the rear trailing arm nut sleeve 4 is disposed through the fourth through hole 57 and welded to a wall of the fourth through hole 57, and a distance between an end of the rear trailing arm nut sleeve 4 adjacent to the upper sealing plate 5 and the wall of the fourth through hole 57 in the height direction Z of the vehicle is 2mm to 4mm. For example, the distance D between the end of the rear trailing arm nut sleeve 4 adjacent to the upper seal plate 5 and the end of the wall of the fourth through hole 57 facing the upper seal plate 5 is D, and D is in the range of 2mm to 4mm. D=2mm or 3mm or 4mm, and the above distance is used for welding, and only one welded height is left, so that the volume of the cavity E can be further increased, the stability of the rear trailing arm nut sleeve 4 after being stressed is improved, and the bending stiffness is improved.

In some embodiments, as shown in fig. 1-3 and 6, the rear floor edge beam assembly 100 further includes: the rear trailing arm connecting plate 3, the rear trailing arm connecting plate 3 is located on one side of the upper sealing plate 5 along the height direction Z of the vehicle, two side walls of the rear trailing arm connecting plate 3 opposite to each other along the width direction Y of the vehicle are respectively provided with a second flanging 31, the second flanging 31 is in welded connection with the rear floor side beam, for example, in welded connection with the side beam middle section 2, so that the attaching area of the rear trailing arm connecting plate 3 and the rear floor side beam can be increased, and the rear trailing arm connecting plate 3 and the rear floor side beam can be ensured to be welded in multiple directions, so that the welding area is increased, and the mounting stability of the rear trailing arm connecting plate and the rear floor side beam is improved. Simultaneously, the overall bending rigidity can be improved. Alternatively, the rear trailing arm connecting plate 3 has a first recess 32, and the rear floor side rail has a second recess (not shown), and the first recess 32 is attached to the second recess and welded thereto. For example, the first recess 32 and the second recess may be a plurality of recesses disposed correspondingly. The first concave part 32 and the second concave part are arranged, so that the attaching area of the rear trailing arm connecting plate 3 and the rear floor edge beam can be increased, and the rear trailing arm connecting plate 3 and the rear floor edge beam can be ensured to be welded in multiple directions, so that the welding area is increased, and the stability of the installation of the rear trailing arm connecting plate and the rear floor edge beam is improved. Simultaneously, the overall bending rigidity can be improved.

Of course, the two side walls of the rear trailing arm connecting plate 3 opposite to each other in the width direction Y of the vehicle are each provided with a second flange 31, the second flange 31 is welded to the rear floor side rail, and at the same time, the rear trailing arm connecting plate 3 is provided with a first recess 32, the rear floor side rail is provided with a second recess, and the first recess 32 is fitted to and welded to the second recess. At this time, the first concave portion 32 may extend to the second flange 31 to further increase the welding area and improve the stability of the two mounting. Simultaneously, the overall bending rigidity in multiple directions can be further improved.

The present embodiment also proposes a vehicle including the rear floor side rail assembly 100 described above. According to the embodiment of the application, the supporting section 52 is arranged, the supporting section 52 is connected with the rear floor side beam, the supporting section 52 can play a role of reinforcing structural strength and further can replace a reinforcing piece, so that the cavity E does not need to be additionally provided with the reinforcing piece, the assembly step can be simplified, the assembly difficulty is reduced, the assembly precision is improved, the upper sealing plate 5 can be directly connected with the rear floor side beam in the height direction Z of the vehicle, the reliability of the matching of the upper sealing plate 5 and the rear floor side beam can be improved, and the bending rigidity is improved. Meanwhile, the supporting section 52, the upper sealing plate body 51 and the rear floor side beam jointly define a cavity E, and the cavity E can further improve the overall bending rigidity. In addition, by omitting the reinforcement member connected to the rear floor side beam, the volume of the cavity E can be advantageously increased to facilitate further improvement in bending rigidity.

In some embodiments, as shown in fig. 3, fig. 3 is a cross-sectional view of a front mounting point Y direction of a rear trailing arm of a vehicle, wherein the rear trailing arm connecting plate 3 is welded with the side beam middle section 2Z direction, then welded with the side beam front section 1 in three layers, the rear subframe nut sleeve 6 is welded in alignment with a hole site, the upper sealing plate 5 penetrates through the rear subframe nut sleeve 6 to be welded, the upper sealing plate 5 is connected with a lowest surface welding point of a pit of the rear trailing arm connecting plate 3, then welded with the side beam middle section 2 and the side beam front section 1 in three layers in Y direction, and finally welded at the joint edge of the rear trailing arm connecting plate 3 and the side beam middle section 2Z surface. The front section 1 of the boundary beam and the middle section 2 of the boundary beam are welded in the Y direction, so that the integral bending and twisting strength is improved; the rear longitudinal arm connecting plate 3 is welded with the longitudinal beam in the Z direction, bending and welding of the side beam middle section 2Y direction are increased, integral bending torsion is transferred to the side beam middle section 2, integral bending torsion strength is improved, the upper sealing plate 5 is connected with the bottom of the rear longitudinal arm connecting plate 3 through a welding point, and the rear longitudinal arm bolting cavity E is increased, so that integral bending torsion strength is improved.

In some embodiments, as shown in fig. 4, fig. 4 is a cross-sectional view of the front mounting point Y of the rear subframe, the first rear subframe connecting plate 11 is welded with the side beam middle section 2, then the three are welded together by passing through the rear subframe nut sleeve 6, the flanging hole of the upper sealing plate 5 passes through the rear subframe nut sleeve 6, then the welding is performed, and the tail end of the upper sealing plate 5 is welded with the side beam middle section 2Z. The joint of the upper sealing plate 5 and the nut sleeve 6 of the rear auxiliary frame is turned over to increase the stress area, so that the force can be effectively transmitted to the two sides of the middle section 2 of the boundary beam, and the integral bending and twisting strength is increased; the boundary beam middle section 2 is welded with the rear first auxiliary frame connecting plate and the rear auxiliary frame nut sleeve 6, the Z-direction material thickness of the suspension mounting point is increased, the reinforcing part can be reduced, the whole vehicle reduction procedure and welding precision are improved, and the weight cost of the whole vehicle is reduced.

In some embodiments, as shown in fig. 5, fig. 5 is a Y-directional cross-section of a rear mounting point of a rear subframe, another rear subframe nut sleeve 6 is welded with the side beam middle section 2, then the other rear subframe nut sleeve 6 is welded together by passing through the other rear subframe nut sleeve 6, a rear subframe nut sleeve reinforcing bracket 7 is welded together by passing through the other rear subframe nut sleeve 6, and then welded with the side beam middle section 2 by two layers of welding, so that the Z-directional material thickness of the mounting point of the suspension is increased, the reinforcement can be reduced, the procedure and welding precision of the whole vehicle can be improved, and the weight cost of the whole vehicle can be reduced.

In some embodiments, as shown in fig. 8 and 9, fig. 9 is a second rear subframe connection plate 9 and fig. 8 is a first rear subframe connection plate 11 of an embodiment of the present application. The first rear auxiliary frame connecting plate 11 may have a third flange 112, the second rear auxiliary frame connecting plate 9 may have a fourth flange 91 to be welded with the side beam middle section 2 in three sides in the Z direction and the Y direction, the Z-direction large surface of the second rear auxiliary frame connecting plate 9 may have a first convex rib 92, and the first convex rib 92 may be one or more, so as to improve the Z-direction welding precision with the side beam middle section 2 and the electrophoresis permeability, and improve the rigidity of the suspension beam. The Z-directional large surface of the first rear subframe connecting plate 11 may have a second bead 113, and the second bead 113 may be one or more, so as to improve the Z-directional welding precision with the side beam middle section 2 and improve the electrophoresis permeability, and may improve the rigidity of the suspension beam.

The above embodiments are merely preferred embodiments for fully explaining the present application, and the scope of the present application is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present application, and are intended to be within the scope of the present application.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A rear floor boundary beam assembly for a vehicle, comprising:

a rear floor edge beam;

go up the shrouding, go up the shrouding and include shrouding body and support the section, support the section with the tip of going up the shrouding body is buckled and is connected and with the back floor boundary beam links to each other, support the section go up the shrouding body with the cavity is jointly limited out to the back floor boundary beam.

2. The vehicle rear floor side rail assembly of claim 1, wherein the rear floor side rail comprises a first rail body and at least one second rail body, the first rail body is located on one side of the upper seal plate in the height direction of the vehicle, the second rail body is connected to one side of the first rail body in the width direction of the vehicle, the support section and one side of at least one of the upper seal plate bodies in the width direction of the vehicle have a first flange, and the first flange is welded to the second rail body.

3. The vehicle rear floor side rail assembly of claim 2, wherein a portion of the first flange projects away from the second beam body to be spaced apart from the second beam body.

4. The vehicle rear floor side rail assembly according to claim 1, wherein a side surface of the upper sealing plate facing in a height direction of the vehicle has a plurality of reinforcing ribs, a plurality of the reinforcing ribs extend in a width direction of the vehicle, or at least two of the plurality of reinforcing ribs are connected to each other, and both ends of at least one reinforcing rib are respectively connected to edges of the upper sealing plate extending in a length direction of the vehicle.

5. The vehicle rear floor side rail assembly of claim 1, further comprising a rear subframe nut sleeve connected to the vehicle rear subframe, the upper seal plate having a first through hole and an annular flange surrounding the first through hole, the rear subframe nut sleeve passing through the first through hole and being welded to the annular flange.

6. The vehicle rear floor side rail assembly of claim 5, wherein the rear floor side rail has a second through-hole disposed opposite the first through-hole, the rear subframe nut sleeve having an annular flange projecting outwardly in a radial direction;

the rear floor boundary beam assembly further comprises: the first rear auxiliary frame connecting plate is provided with a third through hole which is opposite to the first through hole and the second through hole, the auxiliary frame nut sleeve is arranged in the first through hole, the second through hole and the third through hole in a penetrating mode, the annular convex edge is provided with a step portion, and the rear floor side beam, the first rear auxiliary frame connecting plate and the step portion are abutted.

7. The vehicle rear floor side rail assembly of claim 5, wherein the upper seal plate has a fourth through hole disposed at a distance from the first through hole, the rear floor side rail assembly further comprising a rear trailing arm nut sleeve penetrating the fourth through hole and welded to a wall of the fourth through hole, and a distance between an end of the rear trailing arm nut sleeve adjacent to the upper seal plate and the wall of the fourth through hole in a height direction of the vehicle is 2mm to 4mm.

8. The vehicle rear floor side rail assembly of claim 1, wherein the rear floor side rail comprises:

the side beam front section is provided with a first side beam section and a second side beam section which are connected in a bending way;

the boundary beam middle section, the boundary beam middle section has third boundary beam section and fourth boundary beam section of buckling connection, first boundary beam section with third boundary beam section welded connection, second boundary beam section with fourth boundary beam section welded connection.

9. The vehicle rear floor boundary beam assembly of claim 1, further comprising: the rear trailing arm connecting plate is positioned on one side of the upper sealing plate along the height direction of the vehicle;

two side walls of the rear trailing arm connecting plate, which are opposite to each other along the width direction of the vehicle, are respectively provided with a second flanging, and the second flanging is welded with the rear floor side beam; and/or, the rear trailing arm connecting plate is provided with a first concave part, the rear floor side beam is provided with a second concave part, and the first concave part is attached to the second concave part and is connected with the second concave part in a welding way.

10. A vehicle comprising a rear floor boundary beam assembly according to any one of claims 1-9.